PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1794-ID2 is a FLEX I/O Incremental Encoder Module designed for high-speed pulse counting. This unit includes two counter channels with four optocoupled inputs per counter. Field circuits accommodate operating voltages from 12V DC to 24V DC. The module processes independent negative and positive inputs for complementary and non-complementary signals. Flexbus communication draws 5 mA at 5V DC backplane power.
Event triggering executes using one or two individually programmable pulse trains. Hardware diagnostics provide 13 status indicators, including one red and green indicator plus 12 yellow indicators. The unit installs into a terminal base unit and communicates across network architectures via an adapter. The compact open-style enclosure supports standard screw mounting or DIN rail placement. Dimensions measure 46 by 94 by 53 millimeters.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Product Line | Flex I/O 1794 |
|---|
| UPC | 612598184255 |
|---|
| Weight | 0.63 lbs (0.28 kg) |
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| Inputs per Counter | 4 |
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| On-state Voltage min. | 6V DC |
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| On-state Voltage max. | 26.4V DC |
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| On-state Current min. | 3mA @ 6V DC |
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| On-state Current max. | 15mA @ 24V DC |
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| Off-state Voltage max. | 3V DC |
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| Counting Frequency | 100kHz max. |
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| Isolation Voltage | 500V AC |
|---|
| Flexbus Current | 5mA @ 5V DC |
|---|
| Power Dissipation | 17.1 BTU/hr. @ 26.4V DC max. |
|---|
TECHNICAL INFORMATION
Features
- Provides two counter channels with four optocoupled inputs per counter.
- Supports maximum pulse counting frequencies up to 100 kHz.
- Accepts on-state input voltages ranging from 6V DC to 26.4V DC.
- Offers 500V AC isolation between field wiring and system logic.
- Includes 13 onboard status indicators for operational and input monitoring.
- Operates with low Flexbus backplane current draw of 5 mA at 5V DC.
TECHNICAL INFORMATION
Applications
- High-speed pulse counting applications in industrial automation lines.
- Position feedback tracking via incremental encoder transmitters.
- Quantity counting and high-speed calculation routines.
TECHNICAL INFORMATION
Connections / Interfaces
- Interfaces with external devices through a FLEX I/O network adapter.
- Connects complementary and non-complementary signals using independent positive and negative terminals.
TECHNICAL INFORMATION
Installation Guidelines
- Remove field-side power before module insertion or removal to prevent electric arcing.
- Mount the module directly onto a compatible FLEX I/O terminal base.
- Secure the assembly via panel screw mounting or DIN rail.
- Ensure proper seating to prevent insertion errors and communication faults.
TECHNICAL RESOURCES
Documentation
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the primary function of the Allen-Bradley 1794-ID2 module?
The 1794-ID2 performs high-speed pulse counting, positioning, and frequency tracking in a FLEX I/O system.
What is the maximum counting frequency supported by the 1794-ID2?
The module supports a maximum counting frequency of 100 kHz across its counter inputs.
What is the indicative market price for the 1794-ID2?
Observed market reference pricing is approximately $719 USD for refurbished stock. This figure represents indicative market reference pricing only and is not a final quotation.
